A new warning on Russian meddling and a declassified memo about Obama-era surveillance.

As it has for most of our lifetimes, the government of Russia will once again be engaged in trying to disrupt and discredit our democracy during this fall’s elections. At a hearing today of the Senate Intelligence Committee, Director of National Intelligence Dan Coats warned that the Kremlin could again attempt to use technology to undermine our republic.

The fact that Vladimir Putin’s government routinely conducts such operations against freely-elected governments should not make the United States any less vigilant. The Journal...